package marina;

import java.util.Scanner;

public class J02MyAge {

	public static void main(String[] args) {
		int birth;
		int now;
		int age;
		Scanner sc = new Scanner(System.in);
		birth = sc.nextInt();
		now = sc.nextInt();

		age = now - birth;

		System.out.println("당신의 나이는 " + age + "입니다.");
		sc.close();
	}

}